EP2168417B1 - Dispositif de dosage monograin - Google Patents

Dispositif de dosage monograin Download PDF

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Publication number
EP2168417B1
EP2168417B1 EP09170933.7A EP09170933A EP2168417B1 EP 2168417 B1 EP2168417 B1 EP 2168417B1 EP 09170933 A EP09170933 A EP 09170933A EP 2168417 B1 EP2168417 B1 EP 2168417B1
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EP
European Patent Office
Prior art keywords
grains
air flow
metering device
grain
seed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP09170933.7A
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German (de)
English (en)
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EP2168417A2 (fr
EP2168417A3 (fr
Inventor
Thomas Horsch
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Horsch Maschinen GmbH
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Horsch Maschinen GmbH
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Publication date
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Publication of EP2168417A2 publication Critical patent/EP2168417A2/fr
Publication of EP2168417A3 publication Critical patent/EP2168417A3/fr
Application granted granted Critical
Publication of EP2168417B1 publication Critical patent/EP2168417B1/fr
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Anticipated expiration legal-status Critical

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C7/00—Sowing
    • A01C7/04—Single-grain seeders with or without suction devices
    • A01C7/042—Single-grain seeders with or without suction devices using pneumatic means
    • A01C7/044—Pneumatic seed wheels
    • A01C7/046—Pneumatic seed wheels with perforated seeding discs

Definitions

  • the present invention relates to a Einzelkorndosiervorraum with the features of the preamble of claim 1.
  • Einzelkorndosiervorraumen are used in particular for spreading seed and for positionally accurate introduction of previously mechanically isolated seeds at predetermined intervals within rows on the field.
  • Einzelkorndosiervorraumen should divide safe and gentle individual seeds from a seed stock and publish in the most accurate time or distance from the singulator.
  • the separation can be done, for example, mechanically by means of so-called.
  • All currently used Einzelkorndosiervoriquesen based on the fact that individual seeds are separated from a seed stock and discharged at a uniform distance, speed-dependent, to the ground. Seed separation takes place via a recording of individual seeds in correspondingly large openings (cells) when passing through the seed stock and subsequent discharge.
  • the openings are bores or grooves which are regularly arranged on a cell carrier.
  • the seeds are introduced into the cells by gravity partly with or against the centrifugal assistance.
  • pressure differences cause the separation.
  • Cell carriers can be: Cell wheels Punch bands or the like. The ejection from the cell is free by gravity and / or centrifugal force, z.T. supported by scrapers.
  • the DE 31 03 101 A1 discloses a seeder comprising a rear seed hopper-forming seed drivable reamer, having suction openings for the seeds, and discharging the sucked seeds from the seed hopper along a path leading from the bottom portion of the container upwardly from the seed area through a container opening.
  • the seeding disc is formed by two parts, namely by a disc body connected to the suction fan and by a disc leaf which bears against the disc body and covers the disc body with respect to the seed.
  • One of these parts is fixed and forms a guide slot extending along the discharge path.
  • the other, rotatably mounted part has distributed over the circumference driver slots, each extending over the radial expansion region of the guide slot.
  • the device has a cell wheel rotatably mounted in a housing, which is provided with funnel-shaped bores for receiving the seed, and which is passed through an air flow emerging from a nozzle.
  • the cellular wheel is provided on its circumference with a ring which terminates approximately flush with the cellular wheel and protrudes halfway into the funnel of the cellular wheel.
  • the ring is provided in the area of the funnels with holes whose diameter is smaller than the smallest grain.
  • From the DE 410 440 B is a seed drill with cell wheels for Einzelkornlegung known.
  • the cells of the feeder are interconnected by ejector grooves, so that the grains are brought into the furrow at equal intervals from one or more cell rows through the ejectors in free fall. Between the rows of cells wave-shaped partitions are arranged to provide for a permanent movement of the seed.
  • the field of application of such Einzelkorndosiervorraumen is usually the agricultural seeder for ordering the fields and uniform spreading of seeds.
  • a single-grain metering device which on the one hand enables the highest possible throughput.
  • uniformly precise and trouble-free grain separation and grain delivery should be ensured, even at higher driving speeds.
  • seeds with difficult-to-handle shapes e.g., non-circular
  • wheat or other crops are to achieve accurate singulation at high frequency, in the desired time intervals (adapted for fieldwork speed), in the most accurate delivery quality possible, both temporally and locally.
  • the invention comprises a Einzelkorndosiervoriques with a housing, a grain feed opening into the housing and at least one within or in the region of a grain collecting space rotating conveyor element.
  • This conveyor element is designed as a thin rotating conveyor disc, which has on its side surface or lateral surface a plurality of regularly spaced, each acted upon with negative pressure openings for gripping, -single and promotion in the circumferential direction of the conveyor disc to a delivery area.
  • the openings have a closed circumference in a receiving, separating and conveying area within the housing.
  • the openings extend over the entire thickness of the conveyor element or the conveyor disc and are at least temporarily traversed by air, which ensures reliable adhesion of the grains on the conveyor element during its rotational movement.
  • the openings correspond at least over a portion of the receiving, separating and conveying region each with a depth limit, which ensures that different grain shapes and / or sizes can be promoted equally well. On the other hand, this prevents that smaller grains can slip through the openings in the direction of the intake of the air.
  • the openings are preferably parallel or partially parallel and spaced from the conveying element associated with a depth limit for defining the immersion depth of the respective grains.
  • the opening cross-section of the openings of the rotating conveyor element opens in the delivery area in the radial direction, wherein the scattered grain output from the housing open directly into an air flow for forwarding the separated seeds in a seed line or in a downpipe.
  • the grain acceleration, which acts on the grains, is at least briefly higher than the acceleration of gravity.
  • This additionally applied grain acceleration can preferably be generated by means of a suitable nozzle arrangement which directs an air flow onto the grains and impresses them with a desired acceleration of a defined size in a defined direction.
  • the conveying element is formed by a rotating conveyor disc with a plurality of air-flow openings arranged therein.
  • the openings are each arranged on a circular ring on a side surface of the conveyor disc. Over the course of the recording, separating and conveying area, the openings are closed or have a circumferentially closed cross-section, which is necessary for proper entrainment and promotion of the grains.
  • the delivery of grain into the conveying air flow takes place in an approximately radial direction, relative to the axis of rotation of the conveying element or the conveying disc.
  • the openings in the discharge area open in the radial direction.
  • an opening cross section of the openings has a size in relation to the seeds to be separated and / or dosed, which immerse the grains to be dosed into the openings and / or adjoin the depth boundary.
  • the openings through which air flows are limited or defined by at least two functional elements. These at least two functional elements are arranged overlapping in such a way that an approximately linear grain movement can be predetermined in the delivery region. Furthermore, it is provided that at least one of the limiting functional elements acts as a grain scraper in the delivery area.
  • the conveyor element or the conveyor disk is in this case rotating between the two Function elements arranged.
  • the conveyor disc is disposed between the depth limit and an outer leading edge, wherein the conveyor disc projects beyond the outer leading edge in the circumference.
  • the grains are in the openings, dive into this partially and are additionally guided in their position by the fixed outer leading edge and spaced from the guide disc and parallel to this depth limit and held in position until they reach the delivery area.
  • the air-flow openings arranged in the conveyor disc are delimited or defined by at least three functional elements which are formed by the depth limitation, at least one leading edge and the conveying element.
  • the conveying element or the conveying disk is in this case above, i. spaced for depth limitation and not overlapping with the outer leading edge of a fixed boundary, for example.
  • a disc o. The like. Arranged.
  • the conveying element can optionally be a disc (flat or curved in a convex or concave direction) or a drum which can rotate around the depth limit for the grains, so that the grains in Directed to the delivery area and delivered there, where they can get an approximately linear direction of movement.
  • An opening cross section of the openings of the rotating conveyor disc is variable according to the present invention and opens at least in the discharge area.
  • the cross section of the openings of the rotating conveyor disc opens in the delivery area in the radial direction. In this way, a fast and safe and solid intake of seeds can be ensured, which can be supported by a high air flow. In order to work with the lowest possible pressures, or to minimize the pressure loss caused by flow resistance, it makes sense to work with relatively large cross-sections.
  • the openings closed in the periphery are formed by at least one fixed guide disc and by the rotating conveyor disc.
  • the conveyor disc is preferably arranged parallel and closely spaced to at least one guide disc.
  • the discs can optionally slide on one another with their side faces facing each other.
  • the guide disc has over the Course of recording singulation and conveying a ring segment-shaped groove with leading edges, which describe a conveying path of the means conveyed by the rotating conveyor disc, isolated grains.
  • These ring-segment-shaped edges of the guide disk preferably open tangentially into a straight-line or slightly curved course which defines the delivery area.
  • the inner leading edge acts as scraper for the grains at the same time, since the course of the conveyor area of the curvature opens into a straight line, which ensures that the previously moved on a circular path grains are forced into a straight line until they come to the end of the delivery area in the straight direction of movement. They are stripped by the straight inner guide edge of the conveyor element, and are then accelerated by an air flow, which is preferably introduced by a suitable nozzle means in the discharge area, so that the grains can be accelerated in a desired direction.
  • the conveyor disc is preferably arranged parallel and closely spaced from the at least one guide disc. It makes sense if a seal between the guide and conveyor disc is largely provided without contact by means of a gap seal.
  • the delivery region of the guide disc extends approximately vertically downwards.
  • the delivery region and in particular the inner leading edge form a wiping element for the grains to be separated from the rotating delivery disc.
  • the closed openings are opened in such a way that the conveyor disc rotates away below the guide disc such that the inner edge of the guide disc sweeps the grains out of the opening formed.
  • the radial opening of the openings which are subject to air flow, the grains do not have to carry out any axial movement in relation to the conveyor disk during the grain discharge.
  • the grains are released exactly by the radial opening of the openings for further movement.
  • a rotating conveyor drum may be provided, from the outer periphery of the grains are deflected in a rectilinear motion and then stripped off.
  • the guide plate can also be shaped differently or formed as any desired shaped scraper.
  • the leading edge is designed such that the guide thus formed experiences a radius widening in the region of the delivery chamber in the outer radius for the grains held and conveyed by the delivery disk.
  • the guide disk can be designed so that the grains in front of the Grain delivery through the design of the guide disc in interaction with the conveyor disc perform a straight, linear movement to the grain delivery.
  • the negative pressure at the openings of the rotating conveyor disc is cut off, so that the grains can be discharged vertically downwards.
  • the linear discharge area can have a meaningful length of, for example, about 10 mm from this vacuum or overpressure barrier, and this length may also differ upwards or downwards, depending on the grains to be separated and other structural boundary conditions.
  • a further embodiment of the invention provides that the conveyor disc is formed as a round rotatable disc, which has delivery slots, which are open to the outside, and which form the delivery openings in cooperation with the guide disc.
  • the conveyor slots each extend in a star-shaped outward direction and optionally have a respective curved against the rotational direction of the conveyor disc history. Due to the design of the delivery slots in the conveyor disc, the grains in the linearly moving region, with uniform rotation of the conveyor disc, execute a uniform movement with a substantially constant speed and can thus be dispensed uniformly and stripped off better.
  • the uniform delivery of the grains from the conveyor disc is improved in that the conveyor disc protrudes with its outer circumference and with the length of its curved conveyor slots on the ring segment-shaped edge of the guide disc and thus on adire exigorsnik.
  • each opening which carries the individual grains, leads into the free space. That is, the sides that form the opening hole simply stop and release the grain on the previous motion plane.
  • a uniform sequence of motions in the grain delivery is possible, and the grains do not have to make a short vertical movement to the main discharge direction, which they would have to do if they were released tangentially from a borehole or the like from a conveyor disc.
  • the seed grains are discharged in the grain delivery in a straight-line path, in such a way that the grains are kept for a certain time and not only by the sudden cessation of centrifugal force. This is achieved by the interaction of at least three parts and a slight air flow.
  • the depth limit on which the seed glides First, the depth limit on which the seed glides.
  • a fixed scraping member having a rectilinear course at the end, which keeps the grain movement on a straight path, and which forms one side of the opening.
  • an opening member having at least one side which advances the seed grain. The air flow keeps the grain at the Depth limitation, possibly also on the stripping element, which is straight at the end (if there is no parallel counterpart to the fixed stripping element) until the air flow becomes so weak that the grain pursues its inertial motion coupled with the gravitational force.
  • the conveyor disc may have a larger outer radius than outer leading edge of Delivery opening, wherein the disc has slightly longer conveyor slots.
  • the elongated delivery slots on the disc must have a curvature against the direction.
  • the curved conveyor slots are slightly wider towards the outside, which prevents a possible jamming of the grain.
  • three sides of the opening are formed by the disc on the grain receiving area.
  • the conveyor disc rotates parallel and spaced to a depth limit for defining the immersion depth of the respective grains in the openings.
  • the conveyor disc can rotate only partially or partially parallel to the depth limit.
  • the conveyor disc is slightly inclined to the depth limit, so that they can cause a variable immersion depth. The same applies mutatis mutandis to a radial view of a conveyor drum which rotates concentrically to an annular depth limitation with a smaller radius than the drum.
  • the largest possible flow cross-section for a Korneinbettung is achieved by bringing the seed approximately half in a depression, and around it has a pressure difference, or air flow.
  • a sliding web may be provided which at least partially a circular ring segment-shaped course parallel to the annular segment-shaped edge of Having guide pulley.
  • the depth limitation is formed at least under a portion of the opening. Possibly. the depth limit can also be formed only in a certain area of the conveyor line.
  • the depth boundary under the opening must transition as quickly as possible to a larger volume to minimize the airflow resistance, which is achieved by further setting the depth limit away from the plane of the opening.
  • the depth limitation must be below and along the opening circle, with larger grains possibly also only in the delivery area, and may be kept differently narrow depending on the seed to be separated.
  • the depth limit can also be narrower than the overlying opening, as well as wider or even the same width, depending on how the grains to be separated and the overall system require it.
  • a depression On one side for depth limitation, there is a depression (flow channel).
  • a depression may also be present on both sides for depth limitation.
  • transverse webs or the like In the delivery area, transverse webs or the like must be provided, which act as an air flow barrier and cut off the negative pressure in the discharge area, so that the grains can be scraped off the inner leading edge.
  • An embodiment may also provide a screw.
  • the opening sides are each two sides formed by a fixed guide slot and the movable two opening sides of a movable screw.
  • the depth limitation must also be given here, e.g. through an increased screw shaft axis.
  • an additional grain scraper for singling and regular delivery of the grains in a conveyor area.
  • any design forms for the wiper are possible, for example mechanical wipers, pneumatic wipers or pneumatic-mechanical wipers.
  • the grain collecting space has an air supply for swirling and / or for supporting a grain intake by the conveyor disk within the grain collecting space.
  • the air-assisted turbulence can be carried out in particular by one or more air supply lines.
  • the air-assisted turbulence can also be effected by the air flow of the separation.
  • the Kornsammelraum forms a kind of vortex chamber, which is constantly supplied with supplied air, to obtain in this way a constant grain movement, which prevents blockages or blockages, so that all openings of the conveying element are each acted upon with individual grains.
  • a further embodiment of the invention provides in the grain collecting space an eddy nose streamed by supplied air. An air flow guidance of the separating air flow takes place at the vortex nose.
  • the formation of the orifice hole must be made of thin material to give enough space for the required air flow around the opening and not to severely limit stripping of too many grains, as well as to achieve the smallest possible pulley return area in the area of the directional flow air in the disk solution.
  • the flow air channel resulting from the stepped depth limitation may have Strömungs Kunststoffbarrieren to Kornabgabe Scheme so that the flow at the opening edge in the grain intake is greater than in the grain delivery, preferably before leaving the free space.
  • the seal between the guide and conveyor disc is contactless (gap seal).
  • the air flow outlet is located on the slide side in the area of the grain receiver or grain scraper.
  • a further embodiment variant of the single-grain metering device provides that a vortex chamber with a pressure connection for supplying air to the turbulence and / or for supporting a grain intake by the conveyor disk within the grain collecting space and / or the vortex chamber is provided.
  • a vortex nose which is impinged by air, can be present for guiding the air flow in the vortex chamber.
  • a narrow passage can be provided between the vortex chamber, above the eddy nose and the discharge area, which ensures a constant negative pressure in the area of the vortex chamber and ensures that grains flying around in the vortex chamber do not leave it. After the narrow passage, a cross-sectional enlargement takes place in the region of the delivery chamber.
  • the narrow passage ensures that the amount of air required for the function of the separation is reduced.
  • the narrow passage may be reduced in particular in the axial direction with respect to an axial height of the vortex chamber.
  • the eddy nose is used to divide the air flow from the supply air connection and for a constant circulation of the grains in the vortex chamber.
  • the eddy nose can preferably be designed in such a way that the air flow at the eddy nose is thereby divided, for example approximately half.
  • a stirring element can be connected to the conveying element, which ensures that the grains are kept in motion in the region of the grain holder.
  • an external supply air connection may be present, which carries out the air equalization in the separating unit, so that there is no unnecessary negative pressure is built.
  • the storage chamber can be filled, for example, by a larger, upstream container.
  • the pantry can be filled by a pneumatic conveyor system.
  • a Luftabstreifung the grains may be provided in order to dissuade the excessively entrained during recording grains from the opening, so that only one grain depends on an opening.
  • An airflow serves to support the grain intake, where the openings can accommodate the seeds.
  • the grain wiper are possible, for example, mechanical grain wiper, pneumatic grain wiper or pneumatic-mechanical grain wiper.
  • a further embodiment of the Einzelkorndosiervoriques provides that the opening for the grain transport in the receiving area is bounded on three sides by the conveyor disc and on one side outwards by the guide plate and then passes into a region in which the opening on two sides by the conveyor disc and one to two sides is bounded by the guide plate is / are.
  • the grains do not have to carry out any axial movement in relation to the conveyor disk during the grain discharge.
  • the diameter of the conveyor disc is expediently greater than the diameter of the guide plate outer edge.
  • the opening cross section of the openings may vary during one revolution of the conveyor disc.
  • the Kornabgabe Scheme may be preceded by an additional vacuum barrier.
  • the conveyor disc is so thin that grains which dive into the opening and slide along the depth boundary protrude clearly beyond the surface of the conveyor disc and are thus struck by the edge of the guide disc out of the opening upon delivery.
  • the scattered grain output from the housing can open directly into a seed slot or into a downpipe, wherein the grain is actively accelerated by an air flow.
  • the scattered grain output from the housing can also open directly from the conveyor disc in a conveying air flow after the grains are released at the opening radially; see embodiment entspr. Fig7 ,
  • acceleration wheel or acceleration belt which accelerates the separated grains briefly on the way to the storage slot.
  • the acceleration is here for a short time higher than the gravitational acceleration of the earth.
  • the drive of the metering device can be configured as desired, for example by a chain, belt or cardan drive, or be driven directly by pneumatic, hydraulic or electric drives.
  • Fig. 1 shows a perspective view of an embodiment of a Einzelkorndosiervorraum invention.
  • Fig. 2 shows a further perspective view of the Einzelkorndosiervorraum according to Fig. 1 ,
  • Fig. 3 shows a partially opened housing of the Einzelkorndosiervoriques according to Fig. 1 ,
  • Fig. 4 shows a schematic representation of a rotating in the housing conveyor disc and its essential components.
  • Fig. 5 shows a housing half with removed conveyor and guide disc and thereby made visible flow channels.
  • Fig. 6 shows a side view of a narrow side of the drum-shaped housing to illustrate a gap seal between conveyor and guide disc.
  • Fig. 7 shows in two views a nozzle assembly for blowing off the conveyed grains and their transfer into a conveying air flow.
  • Fig. 8 shows in two further views the nozzle assembly and their installation in the housing of the Einzelkorndosiervorraum.
  • FIGS. 1 to 8 Based on the schematic representations of FIGS. 1 to 8 a preferred embodiment of an inventive Einzelkorndosiervorraum 10 is explained in more detail. The same parts in the figures are basically designated by the same reference numerals, which is why a multiple explanation is partially omitted.
  • the Einzelkorndosiervortechnik 10 described in more detail below and explained in detail with reference to the figures is particularly suitable for application of wheat or similarly shaped and / or sized seed.
  • FIGS. 1 and 2 show a drum-shaped housing 12 of the Einzelkorndosiervorraum 10 having a larger connection piece as a vacuum port 14 and a smaller connection piece as a pressure port 16 for singling and / or swirling the guided by means of a delivery nozzle 15 grains in a storage chamber on an upper side.
  • a drive pinion 18 for a rotary drive in a detail in the following figures in the housing 12 rotatably mounted rotating conveyor disc.
  • the drive pinion 18 is used for rotational transmission by means of a roller chain (not shown), which may be coupled, for example. With a central drive shaft or with a separate drive motor.
  • FIG. 3 shows the unilaterally open housing 12 of the Einzelkorndosiervoriques 10 of a drive pinion 18 facing away, opposite flat side.
  • the there normally arranged lid with grain feed into the pantry 20 is omitted for the sake of clarity.
  • the storage chamber 20 serves as an intermediate container or as a grain collecting space for supplying grains to be separated to the rotating conveyor disc 22 and can be filled with a stirring shaft, mounted on the axis of rotation supportive.
  • the conveyor disc 22 has on its side surface a plurality of regularly spaced, each acted upon with negative pressure from the vacuum port 14 can be acted upon openings 24 for grit receiving, -sellering and promotion in the circumferential direction R of the conveyor disc 22 a delivery area 26.
  • the openings 24 have a closed circumference within the housing 12 in a receiving, separating and conveying region located upstream of the delivery region 26.
  • An opening cross-section of the openings 24 of the rotating conveyor disc 22 is variable and opens delivery area 26, so that the grains are discharged from the conveyor disc 22 at regular intervals and can fall vertically downwards from the delivery area 26.
  • FIG. 4 opens the opening cross-section of the openings 24 of the rotating conveyor disc 22 in the discharge region 26 in the radial direction.
  • the openings 24 are formed by a fixed guide disc 28 and the rotating conveyor disc 22.
  • This guide plate 28 is arranged parallel and closely spaced from the conveyor disc, as shown by the Figures 2 and 3 is clarified.
  • the guide disk 28 has, over the course of the recording, separating and conveying region, a ring-segment-shaped leading edge 31 which describes a conveying path of the separated grains conveyed by means of the rotating conveyor disk 22.
  • This annular segment-shaped leading edge 31 of the guide plate 28 opens tangentially in a straight-line downwardly leading course, which defines the delivery area 26.
  • the rectilinear downwardly extending portion of the groove 30 in the discharge area 26 thus simultaneously forms a scraper for the grains to be separated from the rotating conveyor disc 22, so that they fall downwards at regular intervals.
  • the negative pressure applied to the openings 24 of the rotating conveyor disc 22 is cut off in the delivery area 26.
  • the guide groove 30 has an inner edge 29 of smaller diameter and an outer edge 31 of larger diameter.
  • the conveyor disc 22 is formed as a round rotatable disc having delivery slots 32 which are open to the outside, and which form in cooperation with the guide disc 28, the delivery openings.
  • the delivery slots 32 each extend in a star shape outward and also each have a curved against the direction of rotation R of the conveyor disc 22 course.
  • the conveyor disc 22 protrudes with its outer circumference and with the length of its curved conveyor slots 32 via the annular segment-shaped groove or outer leading edge 31 of the guide plate 28 and thus beyond arophy personallyswan addition.
  • the grain collecting space or the storage chamber 20 have, with the pressure connection 16, an air supply for swirling and / or for supporting a grain intake by the conveyor disk 22 within the grain collecting space 20 (cf. Fig. 3 ).
  • a swirling nose 40 which is streamed in by the supplied air, is provided in the grain collecting space 20.
  • air flow guidance of the singling air flow takes place.
  • the area below the vortex nose 40 forms the storage chamber 20, while an area above the vortex nose 40 forms a vortex chamber 42.
  • the stub shaft of the drive shaft may be provided in the embodiment shown with an eccentrically arranged pin o.
  • the like. Which may serve as a stirring element, so that the adjoining grains are permanently stirred.
  • a seal between the guide plate 28 and the conveyor disc 22 may preferably be ensured without contact by means of a gap seal 44.
  • the scattered grain discharge from the housing 12 can optionally lead directly into a seed slot or into a downpipe (not shown).
  • the scattered grain output can also lead directly out of the housing 12 into a conveying air flow (also not shown).
  • Fig. 7 illustrate an optional nozzle assembly 48 for blowing off the conveyed grains in the discharge region 26 of the conveyor disc 22 and for their transfer into a conveying air flow.
  • the discharge direction of the nozzle 50 is preferably aligned so that the grains when releasing from the conveyor disc 22, a desired fall and / or direction of movement can be given.
  • Fig. 8 shows in two other views, the nozzle assembly 48 and its installation in the housing 12 of the Einzelkorndosiervorraum 10.
  • the nozzle assembly 48 is directed to the discharge area 26, so that the dispensing direction of the grains, in particular the wheat grains are influenced in a desired manner can.

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  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Sowing (AREA)
  • Sampling And Sample Adjustment (AREA)

Claims (14)

  1. Dispositif de dosage monograine (10), comprenant un boîtier (12) ayant une alimentation de graines ainsi qu'au moins un élément transporteur (22) tournant au niveau d'un espace collecteur de graines (20) et qui est constitué par un mince disque de transport (22) et présente, sur une face latérale, une multitude d'ouvertures (24) espacées régulièrement les unes des autres, aptes à être soumises chacune à une différence de pression et destinées à recevoir, à individualiser et à transporter les graines dans la direction circonférentielle dudit élément transporteur (22) vers une zone de distribution (26), lesdites ouvertures (24) présentant, dans une zone de réception, d'individualisation et de transport à l'intérieur du boîtier (12), une circonférence fermée, les ouvertures (24) s'étendant sur l'ensemble de l'épaisseur de l'élément transporteur ou bien du disque de transport (22) étant traversées par de l'air au moins temporairement et correspondant chacune, au moins sur une portion de ladite zone de réception, d'individualisation et de transport, avec un moyen limiteur de profondeur (34), la section d'ouverture desdites ouvertures (24) de l'élément transporteur rotatif (22) ou bien du disque rotatif de transport (22) s'ouvrant, dans la zone de distribution (26), en direction radiale, et les graines individualisées subissant, après l'ouverture radiale, une accélération active de graine qui, pour un court temps, est supérieure à l'accélération due à la pesanteur, ledit élément transporteur ou bien le disque de transport (22) étant disposé entre ledit moyen limiteur de profondeur (34) et une arête extérieure de guidage (31), et ledit disque de transport (22) dépassant en circonférence ladite arête extérieure de guidage (31).
  2. Dispositif de dosage monograine selon la revendication 1, comprenant une distribution de graines dans le flux d'air de transport dans une direction approximativement axiale, par rapport à un axe de rotation de l'élément transporteur ou bien du disque de transport (22).
  3. Dispositif de dosage monograine selon la revendication 1, comprenant une distribution de graines dans le flux d'air de transport dans une direction approximativement radiale, par rapport à un axe de rotation de l'élément transporteur ou bien du disque de transport (22).
  4. Dispositif de dosage monograine selon l'une quelconque des revendications 1 à 3, dans lequel une section d'ouverture des ouvertures (24) présente une dimension par rapport aux graines à individualiser et/ou à doser, qui permet aux graines de plonger dans lesdites ouvertures (24) et/ou de confiner au moyen limiteur de profondeur (34).
  5. Dispositif de dosage monograine selon l'une quelconque des revendications 1 à 4, dans lequel ledit moyen limiteur de profondeur (34) s'étend parallèlement et à distance des ouvertures (24) pour définir la profondeur de plongée des graines respectives.
  6. Dispositif de dosage monograine selon l'une quelconque des revendications 1 à 5, dans lequel ledit élément transporteur ou bien ledit disque de transport (22) est disposé à rotation entre deux éléments fonctionnels.
  7. Dispositif de dosage monograine selon l'une quelconque des revendications 1 à 6, dans lequel les ouvertures (24) traversées par de l'air sont délimitées ou bien définies par au moins trois éléments fonctionnels qui sont constitués par ledit moyen limiteur de profondeur (34), au moins une arête de guidage (29, 30, 31) ainsi que par ledit élément transporteur (22).
  8. Dispositif de dosage monograine selon l'une quelconque des revendications 1 à 7, dans lequel ledit élément transporteur ou bien ledit disque de transport (22) est combiné avec au moins deux autres éléments fonctionnels, l'élément transporteur ou bien le disque de transport (22) étant disposé au-dessus du moyen limiteur de profondeur (34) et de manière à ne pas chevaucher avec ladite arête extérieure de guidage (31).
  9. Dispositif de dosage monograine selon l'une quelconque des revendications 1 à 8, dans lequel la différence de pression sur les ouvertures (24) du disque rotatif de transport (22) est coupée dans la zone de distribution (26).
  10. Dispositif de dosage monograine selon l'une quelconque des revendications 1 à 9, dans lequel la section d'ouverture des ouvertures (24) de l'élément transporteur rotatif (22) ou bien du disque rotatif de transport (22) s'ouvre, dans ladite zone de distribution (26), en direction radiale, et dans lequel la distribution individualisée des graines depuis ledit boîtier (12) débouche directement dans un flux d'air de transport.
  11. Dispositif de dosage monograine selon l'une quelconque des revendications 1 à 10, dans lequel la section d'ouverture des ouvertures (24) varie durant une rotation du disque de transport (22).
  12. Dispositif de dosage monograine selon l'une quelconque des revendications 1 à 11, dans lequel, dans une chambre de turbulence (42), un courant d'air est prévu pour tourbillonner et/ou soutenir une réception de graines par le disque de transport (22) à l'intérieur de l'espace collecteur de graines (20) et/ou la chambre de turbulence (42), par exemple par l'intermédiaire d'un raccord de pression (16), ou par le courant d'air qui veille à ce que les graines adhèrent aux ouvertures, et dans lequel un nez de turbulence (40) rencontré par l'air et destiné à guider le courant d'air à l'intérieur de la chambre de turbulence (42) est présent dans la chambre de turbulence (42).
  13. Dispositif de dosage monograine selon la revendication 12, dans lequel un passage étroit (46) est prévu entre ladite chambre de turbulence (42) au-dessus du nez de turbulence (40) et ladite zone de distribution (26), qui est réduit dans la direction axiale par rapport à une hauteur axiale de ladite chambre de turbulence (42).
  14. Dispositif de dosage monograine selon la revendication 13, dans lequel un courant d'air à l'encontre du sens de transport de graines vers la chambre de turbulence (42) règne au niveau d'un passage étroit (46).
EP09170933.7A 2008-09-26 2009-09-22 Dispositif de dosage monograin Not-in-force EP2168417B1 (fr)

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DE102008037397A DE102008037397A1 (de) 2008-09-26 2008-09-26 Einzelkorndosiervorrichtung

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EP2168417A2 EP2168417A2 (fr) 2010-03-31
EP2168417A3 EP2168417A3 (fr) 2011-04-20
EP2168417B1 true EP2168417B1 (fr) 2013-09-11

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EP09170933.7A Not-in-force EP2168417B1 (fr) 2008-09-26 2009-09-22 Dispositif de dosage monograin

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EP (2) EP2168416B1 (fr)
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DE102015001896A1 (de) * 2015-02-26 2016-09-01 Gerald Funck Vereinzelungsaggregat für körniges Gut
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Also Published As

Publication number Publication date
US20100077948A1 (en) 2010-04-01
US7854206B2 (en) 2010-12-21
EP2168416A3 (fr) 2011-04-20
EP2168416B1 (fr) 2013-11-06
EP2168417A2 (fr) 2010-03-31
EP2168417A3 (fr) 2011-04-20
DE102008037397A1 (de) 2010-04-01
BRPI0903322A2 (pt) 2010-06-15
EP2168416A2 (fr) 2010-03-31

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